312546661 has 12 divisors (see below), whose sum is σ = 365862112. Its totient is φ = 261410184.

The previous prime is 312546623. The next prime is 312546677. The reversal of 312546661 is 166645213.

It is not a de Polignac number, because 312546661 - 2¹³ = 312538469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312546691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306210 + ... + 307228.

Almost surely, 2^312546661 is an apocalyptic number.

It is an amenable number.

312546661 is a deficient number, since it is larger than the sum of its proper divisors (53315451).

312546661 is an frugal number, since it uses more digits than its factorization.

312546661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 1069 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 312546661 is about 17678.9892527825. The cubic root of 312546661 is about 678.6381777853.

The spelling of 312546661 in words is "three hundred twelve million, five hundred forty-six thousand, six hundred sixty-one".